<template>
  <div class="person">
    <h2>当前求和为：{{ sum }}</h2>
    <button @click="add">点我sum+1</button>
  </div>
</template>

<script lang="ts" setup name="Person">
import { ref, onBeforeMount, onMounted, onBeforeUpdate, onUpdated, onBeforeUnmount, onUnmounted } from 'vue'

let sum = ref(0)
const add = () => sum.value++
// 创建
console.log('创建')
// 挂载前
onBeforeMount(() => console.log('挂载前'))
// 挂载完毕
onMounted(() => console.log('挂载完毕'))
// 更新前
onBeforeUpdate(() => console.log('更新前'))
// 更新完毕
onUpdated(() => console.log('更新完毕'))
// 卸载前
onBeforeUnmount(() => console.log('卸载前'))
// 卸载完毕
onUnmounted(() => console.log('卸载完毕'))
</script>

<style scoped>
.person {
  background-color: skyblue;
  box-shadow: 0 0 10px;
  border-radius: 10px;
  padding: 20px;
}

button {
  margin: 0 5px;
}

li {
  font-size: 20px;
}
</style>